links http://www.thamnophis.com. http://www.gartersnake.info. Further reading Baird SF, Girard CF (1853). Catalogue of North American Reptiles in the Museum of the Smithsonian Institution. Part I.—Serpents. Washington, District of Columbia: Smithsonian Institution. xvi + 172 pp. (Eutainia marciana, new species, pp. 36–37). Behler JL, King FW (1979). The Audubon Society Field Guide to North American Reptiles and Amphibians. New York: Alfred A. Knopf, Inc. 743 pp. . (Thamnophis marcianus, p. 669 + Plate 515). Schmidt KP, Davis DD (1941). Field Book of Snakes of the United States and Canada. New York: G.P. Putnam's Sons. 365 pp. (Thamnophis marcianus, pp. 241–243). Smith HM, Brodie ED Jr (1982). Reptiles of North America: A Guide to Field Identification. New York: Golden Press. 240 pp. . (Thamnophis marcianus, pp. 150–151). Stebbins RC (2003). A Field Guide to Western Reptiles and Amphibians, Third Edition. The Peterson Field Guide Series ®. Boston and New York: Houghton Mifflin Company. xiii + 533 pp. . (Thamnophis marcianus, p. 389 + Plate 50 + Map 159). Stejneger L, Barbour T (1917). A Check List of North American Amphibians and Reptiles. Cambridge, Massachusetts: Harvard University Press. 125 pp. (Thamnophis marcianus, p. 101). Wright AH, Wright AA (1957). Handbook of Snakes of the United States and Canada. Ithaca and London: Comstock Publishing Associates. 1,105 pp. (in two volumes). (Thamnophis marcianus, pp. 802–806, Figure 231 + Map 58 on p. 763). Thamnophis Extant Pliocene first appearances Reptiles described in 1853 Taxa named by Spencer Fullerton Baird Taxa named by Charles Frédéric Girard